Single fiber passive optical network wavelength division multiplex overlay
First Claim
1. A system for upgrading a baseline passive optical network (PON), comprising:
- a central office having a baseline optical link that receives a baseline communication signal from one or more service provider and converts the baseline communication signal into a downstream baseline optical signal within a first optical bandwidth, and having an additional optical link that receives a second type of communication signal and converts the second type of communication signal into a second downstream optical signal within a second optical bandwidth, wherein the downstream baseline optical signal is combined with the second downstream optical signal to generate a broadband optical signal;
a fiber optic network coupled to the central office that receives the broadband optical signal on at least one optic fiber and splits the broadband optical signal to a plurality of fiber drops; and
a plurality of optical network termination (ONT) units with each ONT unit coupled to a fiber drop, wherein at least one of the ONT units is a baseline ONT unit that receives the broadband optical signal from the fiber drop and splits the downstream baseline optical signal from the broadband optical signal, and wherein at least one other of the ONT units is an upgraded ONT unit that receives the broadband optical signal from the fiber drop and splits the downstream baseline optical signal and the second downstream optical signal from the broadband optical signal;
wherein the installation of the upgraded ONT unit to the PON does not effect baseline optical service to any other ONT unit.
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Accused Products
Abstract
A single fiber passive optical network (PON) wavelength division multiplex (WDM) overlay includes a central office, a fiber optic network, and a plurality of optical network termination (ONT) units. The central office has a baseline optical link that receives a baseline communication signal and converts the baseline communication signal into a downstream baseline optical signal within a first optical bandwidth, and has an additional optical link that receives a second type of communication signal and converts the second type of communication signal into a second downstream optical signal within a second optical bandwidth. The downstream baseline optical signal generated by the baseline optical link is combined with the second optical signal generated by the additional optical link to generate a broadband optical signal. The fiber optic network is coupled to the central office and receives the broadband optical signal on at least one optic fiber. The fiber optic network splits the broadband optical signal to a plurality of fiber drops. The optical network termination (ONT) units are each coupled to a fiber drop. At least one of the ONT units is a baseline ONT unit that receives the broadband optical signal from the fiber drop and splits the downstream baseline optical signal from the broadband optical signal, and at least one other of the ONT units is an upgraded ONT unit that receives the broadband optical signal from the fiber drop and splits the downstream baseline optical signal and the second downstream optical signals from the broadband optical signal. In addition, the installation of the upgraded ONT unit to the PON does not effect baseline optical service to any other ONT unit.
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Citations
34 Claims
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1. A system for upgrading a baseline passive optical network (PON), comprising:
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a central office having a baseline optical link that receives a baseline communication signal from one or more service provider and converts the baseline communication signal into a downstream baseline optical signal within a first optical bandwidth, and having an additional optical link that receives a second type of communication signal and converts the second type of communication signal into a second downstream optical signal within a second optical bandwidth, wherein the downstream baseline optical signal is combined with the second downstream optical signal to generate a broadband optical signal;
a fiber optic network coupled to the central office that receives the broadband optical signal on at least one optic fiber and splits the broadband optical signal to a plurality of fiber drops; and
a plurality of optical network termination (ONT) units with each ONT unit coupled to a fiber drop, wherein at least one of the ONT units is a baseline ONT unit that receives the broadband optical signal from the fiber drop and splits the downstream baseline optical signal from the broadband optical signal, and wherein at least one other of the ONT units is an upgraded ONT unit that receives the broadband optical signal from the fiber drop and splits the downstream baseline optical signal and the second downstream optical signal from the broadband optical signal;
wherein the installation of the upgraded ONT unit to the PON does not effect baseline optical service to any other ONT unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method for upgrading a baseline passive optical network (PON), comprising the steps of:
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providing a baseline optical link in a central office that receives downstream baseline communication signals from one or more service provider and converts the downstream baseline communication signals into a downstream baseline optical signal;
installing an additional optical link in the central office that receives an additional type of communication signals from one or more service provider and converts the additional type of communication signals into an additional downstream optical signal;
multiplexing the downstream baseline optical signal and the additional downstream optical signal to generate a broadband optical signal;
transmitting the broadband optical signal over a fiber optic network;
providing a baseline optical network termination (ONT) unit at a location in the PON;
receiving the broadband optical signal from the fiber optic network with the baseline ONT unit and splitting the downstream baseline optical signal from the broadband optical signal;
installing an upgraded ONT unit at a location in the PON; and
receiving the broadband optical signal from the fiber optic network with the upgraded ONT unit and splitting the additional downstream optical signal and the downstream baseline optical signal from the broadband optical signal.
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Specification